Fast Low-Computation Sequential Model Predictive Control for Mid-Point Potential Balancing

To address the large mid-point potential fluctuation issue of Active Neutral Point Clamped (ANPC) when traditional finite control set model predictive control (FCSMPC) is adopted, this paper proposes a sequential model predictive control method (S-MPC) for midpoint potential optimization. The proposed strategy constructed the cost functions by two models, i.e., current and mid-point potential models in sequence according to a certain priority rule. Simulation and experimental results validate the effectiveness of the proposed method on mid-point potential balancing.